Latch for sliding doors



N0. 6|8,895. Patented Feb. 7, I399.

J. J. MUNDAY.

LATCH FOR SLIDING DOORS, 8L0. (Application findin 1a, 1595.

(No Model.)

NlTED STATES PATENT OFFICE.

JAMES J. MUN DAY, OF PHILADELPHIA, PENNSYLVANIA.

LATCH FOR SLIDING DOORS, 80C.

SPECIFICATION forming part of Letters Patent No. 618,895, dated February7, 1899.

Application filed August 18, 1898. Serial No. 688,859. (No model.)

T0 at whom it may concern:

Be it known that I, JAMES J. MUN-DAY, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful'Improvement in Latches or Bolts forGates, Doors, &c., which improvement is fully set forth in the followingspecification and accompanying drawings.

My invention consists of a latch or bolt formed of a keeper with ashoulder therein, and a dog with a nose adapted to enter said keeper andengage with the shoulder thereon, thus connecting the dog with thekeeper, the latter having on its inner face a recess lead ing from saidshoulder, whereby the nose of the catch is accessible, so that it may bedisengaged from said shoulder, permitting the dog to be removed from thekeeper, the construction of parts being hereinafter described, and thenovel features of the invention pointed out in the claims which followthe specification.

Figure 1 represents a perspective view of a latch or bolt embodyingmyinvention, the parts of the same being separate. Fig. 2 represents apartial side elevation and partial section on line x at, Fig. 1. Fig. 3represents an end view of the keeper. Fig. 4 represents a section online 3 y, Fig. 2.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates an open-ended keeper formed ofthe sides B and the face-plate O, producing a hollow body, on the wallsof whose bore A are the shoulders D, said body having the feet E, bywhich the keeper may be attached to the frame of a cellar-window, agate, a cupboard, or other door or similar object to be secured.

F designates a knuckle, one leaf G of which is adapted to be screwed orotherwise secured to such window, gate, door, 850., and the otherknuckle H has projecting therefrom the resilient dogs J, on whose outerends are the noses K, formed with shoulders L, adapted to engage onshoulders D of the keeper.

At or about the place of junction of the dogs with the knuckle H are theshoulders M, which when the dogs are within the keeper limit the inwardmotion of the same, said shoulders then abutting against the adjacentend walls of the keeper, said wall having thereon the inturned lip N,which projects toward the dogs and covers the space at said end notoccupied by the dogs, whereby an implement cannot be introduced into thekeeper to manipulate the dogs in order to open the same.

Within the keeper, on the end portion opposite to the lip N, are thewalls P of the bore thereof, the same diverging from the shoulders D tothe end of the keeper, thus formin g theflaring recesses Q, which mayreceive the thumb and forefinger in order to grasp the noses of the dogsand bring them together, thus releasing the shoulders L from theshoulders Dand permitting the dogs to be withdrawn from the keeper. Itwill be noticed that said shoulders D are set back from the terminal ofthe keeper, so that while the flaring recesses Q may be formed in thebore the noses K may be contained within the keeper, and thus covered bythe same.

The operation is as follows, the parts being shown in position, as inFig. l: The window or other object is closed and the dogs guided intothe keeper, when the noses ride on the inner wall of the bore of thekeeper, whereby they are brought together, the dogs J yielding to permitthe same. When the dogs have entered into the keeper to the full extent,the shoulders L clear the shoulders D, and

the dogs then spring apart, causing the en 7 gagement of said shouldersL with said shoulders D and the consequent interlocking of the dogs withthe keeper, as most plainly shown in Fig. 2. When it isdesired to openthe window, door, &c., the thumb and forefin ger are inserted in therecesses Q, whereby the noses may be grasped and pinched and broughttogether, thus clearing the shoulders L from the shoulders D, whereuponthe dogs are drawn outwardly from their noses riding through the bore Aof the keeper, the dogs remaining in somewhat-closed condition untilfully emerged from the keeper, when they as sume their normal position,spring apart, so as to be ready for further operation when againintroduced into the keeper.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In alatch of the character stated, a head,

resilient dogs connected at one end with said head, noses at the otherend of said dogs and shoulders on said dogs at their places ofconnection with said head and nose, in combination with a keeper havinga bore Whose opposite ends are adapted to be embraced by the oppositeshoulders of said dogs, shoulders on said bore set back from theterminal of the keeper and Walls converging from said shoulder to saidterminal.

2. In a latch or bolt of the character stated, a resilient dog, a keeperhaving a bore therein and a shoulder at the termination of one portionof said bore for the engagement of the nose of said dog, a head fromwhich said dog projects, and a shoulder at the place of j unction ofsaid dog and said head, said keeper having at the end adjacent to saidshoulders an inturned lip Which projects toward said dog, the shouldersof said nose and head being at opposite endsof said resilient dog.

3. A head, dogs projecting therefrom having noses thereon, shoulders atthe places of junction of said noses with said dogs, and shoulders atthe places of junction of said dogs with said head, in combination witha keeper having a bore therein, shoulders at the termination of aportion of said bore, and Walls converging from said shoulders to theend of the keeper, the opposite end of said keeper having an inturnedlip which projects from the face-plate of the keeper to said dogs, saidparts being combined forming an improvement in a latch or bolt of thecharacter stated.

JAMES J. MUNDAY.

Witnesses:

WM. 0. VVIEDERSHEIM, JOHN A. W IEDERSI-IEIM.

